EIGRP - Routing Protocols and Concepts - page 426

Note: Use the interface configuration command no bandwidth to return the bandwidth to its default value.

Task 9: Examine Successors and Feasible Distances

Examine the successors and feasible distances in the routing table on R2.

Step 1.

R2# show ip route

<output omitted>

10.0.0.0/30 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Loopback1
172.16.0.0/16 is variably subnetted, 4 subnets, 3 masks
D 172.16.0.0/16 is a summary, 00:00:52, Null0
D 172.16.1.0/24 [90/40514560] via 172.16.3.1, 00:00:52, Serial0/0/0
C 172.16.2.0/24 is directly connected, FastEthernet0/0
C 172.16.3.0/30 is directly connected, Serial0/0/0
D 192.168.1.0/24 [90/3014400] via 192.168.10.10, 00:00:11, Serial0/0/1
192.168.10.0/24 is variably subnetted, 3 subnets, 2 masks
D 192.168.10.0/24 is a summary, 00:00:11, Null0
D 192.168.10.4/30 [90/3523840] via 192.168.10.10, 00:00:11,
Serial0/0/1
C 192.168.10.8/30 is directly connected, Serial0/0/1

Answer the following questions. Step 2.

What is the best path to PC1?

172.16.1.0/24 [90/40514560] via 172.16.3.1, 00:00:52, Serial0/0/0

A successor is a neighboring router that is currently being used for packet forwarding. A
successor is the least-cost route to the destination network. The IP address of a successor
is shown in a routing table entry right after the word via .

What is the IP address and name of the successor router in this route?

172.16.3.1, R1

Feasible distance (FD) is the lowest calculated metric to reach that destination. FD is the
metric listed in the routing table entry as the second number inside the brackets.

What is the feasible distance to the network that PC1 is on?

40514560